I'm not sure if this is a Wordpress problem or a Dreamhost problem. I made no changes to my site on Tuesday -- didn't even post to the blog I've had for nine years, and in Wordpress for probably three.
And yet, when you go to the blog's index page here: http://www.fresh-hell.com/blog it forwards to http://www.fresh-hell.com/blog/index.html/ as if index.html is a directory instead of a file.
I didn't change any settings on my end before this happened. Since then, I have tried upgrading Wordpress using One-Click and deactivating all my plugins, and neither one helped.